package com.itheima.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itheima.constant.MessageConstant;
import com.itheima.entity.Result;
import com.itheima.service.MemberService;
import com.itheima.service.ReportService;
import com.itheima.service.SetMealService;

import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;


import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import java.io.File;
import java.io.FileInputStream;

import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * @author ：hg
 * @date ：Created in 2021/12/27 23:11
 * @description：
 */

/**
 * 统计报表
 */
@RestController
@RequestMapping("/report")
public class ReportController {

    @Reference
    private MemberService memberService;

    @Reference
    private SetMealService setMealService;

    /**
     * 会员数量统计
     *
     * @return
     */
    @RequestMapping("/getMemberReport")
    public Result getMemberReport() {
        Calendar calendar = Calendar.getInstance();
        calendar.add(Calendar.MONTH, -12);//获得当前日期之前12个月的日期

        List<String> list = new ArrayList<>();
        for (int i = 0; i < 12; i++) {
            calendar.add(Calendar.MONTH, 1);
            list.add(new SimpleDateFormat("yyyy.MM").format(calendar.getTime()));
        }

        Map<String, Object> map = new HashMap<>();
        map.put("months", list);

        List<Integer> memberCount = memberService.findMemberCountByMonth(list);
        map.put("memberCount", memberCount);

        return new Result(true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS, map);
    }

    /**
     * 套餐预约占比饼形图
     *
     * @return
     */
    @RequestMapping("/getSetmealReport")
    public Result getSetmealReport() {

        try {
            //封裝Java对象转为饼形图所需要的json数据格式
            Map<String, Object> data = new HashMap<>();

            List<Map<String, Object>> setmealCounts = setMealService.findSetmealCount();

            data.put("setmealCount", setmealCounts);

            List<String> setmealNames = new ArrayList<>();
            //遍历添加套餐名称
            setmealCounts.forEach(setmealCount -> {
                String name = (String) setmealCount.get("name");    //套餐名称
                setmealNames.add(name);
            });
            data.put("setmealNames", setmealNames);
            return new Result(true, MessageConstant.GET_SETMEAL_COUNT_REPORT_SUCCESS, data);
        } catch (Exception e) {
            e.printStackTrace();
            return new Result(false, MessageConstant.GET_SETMEAL_COUNT_REPORT_FAIL);
        }
    }

    @Reference
    private ReportService reportService;

    /**
     * 运营数据统计
     *
     * @return
     */
    @RequestMapping("/getBusinessReportData")
    public Result getBusinessReportData() {
        try {
            Map<String, Object> map = reportService.getBusinessReportData();
            return new Result(true, MessageConstant.GET_BUSINESS_REPORT_SUCCESS, map);
        } catch (Exception e) {
            return new Result(false, MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }
    }

    /**
     * 导出运营数据
     *
     * @return
     */
    @RequestMapping("/exportBusinessReport")
    public Result exportBusinessReport(HttpServletRequest request, HttpServletResponse response) {
        try {
            //远程调用报表服务获取报表数据
            Map<String, Object> reportData = reportService.getBusinessReportData();

            //取出返回结果数据，准备将报表数据写入到Excel文件中
            String reportDate = (String) reportData.get("reportDate");
            Integer todayNewMember = (Integer) reportData.get("todayNewMember");
            Integer totalMember = (Integer) reportData.get("totalMember");
            Integer thisWeekNewMember = (Integer) reportData.get("thisWeekNewMember");
            Integer thisMonthNewMember = (Integer) reportData.get("thisMonthNewMember");
            Integer todayOrderNumber = (Integer) reportData.get("todayOrderNumber");
            Integer thisWeekOrderNumber = (Integer) reportData.get("thisWeekOrderNumber");
            Integer thisMonthOrderNumber = (Integer) reportData.get("thisMonthOrderNumber");
            Integer todayVisitsNumber = (Integer) reportData.get("todayVisitsNumber");
            Integer thisWeekVisitsNumber = (Integer) reportData.get("thisWeekVisitsNumber");
            Integer thisMonthVisitsNumber = (Integer) reportData.get("thisMonthVisitsNumber");
            List<Map> hotSetmeal = (List<Map>) reportData.get("hotSetmeal");

            //获取文件在磁盘上的绝对位置
            String filePath = request.getSession().getServletContext().getRealPath("template") + File.separator + "report_template.xlsx";

            //基于模板文件在内存中创建一个excel对象
            XSSFWorkbook excel = new XSSFWorkbook(new FileInputStream(filePath));
            //读取第一个工作表
            XSSFSheet sheet = excel.getSheetAt(0);

            XSSFRow row = sheet.getRow(2);
            row.getCell(5).setCellValue(reportDate);//日期

            row = sheet.getRow(4);
            row.getCell(5).setCellValue(todayNewMember);//新增会员数（本日）
            row.getCell(7).setCellValue(totalMember);//总会员数

            row = sheet.getRow(5);
            row.getCell(5).setCellValue(thisWeekNewMember);//本周新增会员数
            row.getCell(7).setCellValue(thisMonthNewMember);//本月新增会员数

            row = sheet.getRow(7);
            row.getCell(5).setCellValue(todayOrderNumber);//今日预约数
            row.getCell(7).setCellValue(todayVisitsNumber);//今日到诊数

            row = sheet.getRow(8);
            row.getCell(5).setCellValue(thisWeekOrderNumber);//本周预约数
            row.getCell(7).setCellValue(thisWeekVisitsNumber);//本周到诊数

            row = sheet.getRow(9);
            row.getCell(5).setCellValue(thisMonthOrderNumber);//本月预约数
            row.getCell(7).setCellValue(thisMonthVisitsNumber);//本月到诊数

            int rowNum = 12;
            for (Map map : hotSetmeal) {//热门套餐
                String name = (String) map.get("name");
                Long setmeal_count = (Long) map.get("setmeal_count");
                BigDecimal proportion = (BigDecimal) map.get("proportion");
                row = sheet.getRow(rowNum++);
                row.getCell(4).setCellValue(name);//套餐名称
                row.getCell(5).setCellValue(setmeal_count);//预约数量
                row.getCell(6).setCellValue(proportion.doubleValue());//占比
            }

            //使用输出流来
            ServletOutputStream out = response.getOutputStream();
            //设置响应头信息
            response.setContentType("application/vnd.ms-excel");    //代表的是excel文件类型
            response.setHeader("content-Disposition", "attachment;filename=report.xlsx");   //指定以附件形式
            excel.write(out);

            out.flush();
            out.close();
            excel.close();
            return null;
        } catch (Exception e) {
            return new Result(false, MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }

    }

    /**
     * 导出运营数据到PDF
     *
     * @return
     */
    @RequestMapping("/exportBusinessReport4PDF")
    public Result exportBusinessReport4PDF(HttpServletRequest request, HttpServletResponse response) {
        try {
            //远程调用报表服务获取报表数据
            Map<String, Object> reportData = reportService.getBusinessReportData();

            //取出返回结果数据，准备将报表数据写入到Excel文件中
            List<Map> hotSetmeal = (List<Map>) reportData.get("hotSetmeal");

            //获取文件在磁盘上的绝对位置
            String jrxmlPath = request.getSession().getServletContext().getRealPath("template") + File.separator + "health_business3.jrxml";

            //指定编译文件位置
            String jasperPath =
                    request.getSession().getServletContext().getRealPath("template") + File.separator + "health_business3.jasper";

            //编译模板
            JasperCompileManager.compileReportToFile(jrxmlPath, jasperPath);

            //填充数据,使用JavaBean数据源方式填充
            JasperPrint jasperPrint =
                    JasperFillManager.fillReport(jasperPath, reportData,
                            new JRBeanCollectionDataSource(hotSetmeal));

            ServletOutputStream out = response.getOutputStream();
            response.setContentType("application/pdf");
            response.setHeader("content-Disposition", "attachment;filename=report.pdf");

            //输出文件
            JasperExportManager.exportReportToPdfStream(jasperPrint, out);
            return null;
        } catch (Exception e) {
            e.printStackTrace();
            return new Result(false, MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }

    }
}
